from flask import g
from flask import request
from flask import session, jsonify

from info import constants
from info import redis_store
import logging
from flask import current_app,render_template

from info.models import User, News, Category
from info.modules.index import index_blue
from info.utils.commons import user_login_data
from info.utils.response_code import RET

# ************局部刷新*************
@index_blue.route("/newslist")
def news_list():
    # 获取参数
    cid = request.args.get("cid","1")
    page = request.args.get("page","1")
    per_page = request.args.get("per_page", "10")
    # 参数类型转换成int类型，为分页作准备
    try:
        page = int(page)
        per_page = int(per_page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1
        per_page = 10
        # 分页查询
    try:
        # 判断是否分类唯一
        filters = [News.status == 0]
        if cid != "1":
            filters.append( News.category_id == cid)
        paginate = News.query.filter(*filters).order_by(News.create_time.desc()).paginate(page,per_page,False)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno = RET.DBERR,errmsg = "新闻获取失败")
     # 获取对象身上的属性，总页数，当前页，当前页对象列表
    totalPage = paginate.pages
    currentPage = paginate.page
    items = paginate.items
    # 将对象列表转换成字典列表
    newsList = []
    for item in items:
        newsList.append(item.to_dict())
        # 拼接数据，返回响应
    data = {
        "totalPage":totalPage,
        "currentPage":currentPage,
        "newsList":newsList
    }
    return jsonify(errno = RET.OK,errmsg = "获取新闻成功",totalPage = totalPage,currentPage = currentPage,newsList = newsList)

@index_blue.route("/",methods=["GET","POST"])
@user_login_data
def hello():
    # # 获取用户登陆状态
    # user_id = session.get("user_id")
    #
    # # 获取用户登陆数据
    # user = None
    # if user_id:
    #     try:
    #         user = User.query.get(user_id)
    #     except Exception as e:
    #         current_app.logger.error(e)
    # 根据浏览量查询前十条语句
    try:
        news = News.query.order_by(News.clicks.desc()).limit(constants.CLICK_RANK_MAX_NEWS).all()
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(error = RET.DBERR,errmsg = "新闻查询失败")
    # 将新闻对象列表，转成字典列表
    click_news_list = []
    for new in news:
        click_news_list.append(new.to_dict())
    # 查询所有的分类列表
    try:
        categories = Category.query.all()
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(error=RET.DBERR, errmsg="分类查询失败")
    # 讲分类对象列表 转成分类字典列表
    category_list = []
    for category in categories:
        category_list.append(category.to_dict())
    # 携带用户数据渲染到页面中
    data = {
        # 如果user有值,返回左边内容, 否则返回右边
        "user_info":g.user.to_dict() if g.user else "",
        "click_news_list":click_news_list,
        "category_list":category_list
    }
    return render_template("news/index.html", data=data)
# 网站logo处理
@index_blue.route("/favicon.ico")
def web_logo():
    return current_app.send_static_file("news/favicon.ico")
